#!/bin/bash

for item in d1 d2 d3 d4;
do
	echo"$item"
done
echo "............"

for ((i=1;i<101;i++));
do
#
         echo "$i"
	 if (($i%2 == 0 ));then
	        sum=$(($sum+$i))
	fi
done
echo "1-100偶数和是：$sum"



exit 0
